How To Use
In a TextBox

Question

I'm developing a program that I'm using a string(`generatedCode`) that contains some `
` to enter a new-line at the textBox that I'm using it(`textBox1.Text = generatedCode`), but when I'm running the program, instead of breaking that line I'm seeing a square. Remember that I've set the `Multiline` value of the textBox to `True`.

Accepted Answer

Replace 
 with 
 - that's how Windows controls represent newlines (but see note at bottom):

```
textBox1.Text = generatedCode.Replace("
", "
");
```

or

```
textBox1.Text = generatedCode.Replace("
", Environment.NewLine);
```

Note: As discussed in comments, you may want to use `Environment.NewLine`. It's unclear though - it's not well-defined what line separator Windows Forms controls should use when they're not running on Windows. Should they use the platform default, or the Windows one (as it's a port of a Windows GUI control)? One of the examples in MSDN does use `Environment.NewLine`, but I've seen horribly wrong examples in MSDN before now, and the documentation just doesn't state which is should be.

In an ideal world, we'd just have one line separator - and even in a second best world, every situation would clearly define which line separator it was expecting...

How To Use \n In a TextBox

Solution

Problem